RH CAL, Portable Relative Humidity Calibrator

Model: RH CAL


A microprocessor based, programmable humidity calibration system that is at home in the metrology lab or in the field performing on-site, NIST traceable humidity calibrations.


RH CAL is entirely self-sufficient. It does not need compressed air or a water connection to operate, which allows this system to be truly portable.


  • Measurement Ranges:
    Relative humidity: 5 to 95%
    Temperature: 10°C to 50°C
    Dew/Frost Point: -40°C to 60°C with D2 sensor


  • Accuracy:
    Relative humidity: ±0.5%
    Temperature: ±0.1°C
    Dew/Frost Point: ±0.2°C nominal


Please refer to product’s datasheet (PDF)



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